Upper Limb

Upper limbs include the shoulder, arms, upper arm, elbow, forearm, hand, wrist, palm, and fingers. In casual language, the term arm usually refers to the entire upper limb starting from the shoulder to the fingers. But the part between the shoulder and elbow is known as the upper arm and the part between the elbow and wrist is called Forearm.

Shoulder
It is a ball and socket-like joint located where the humerus end and clavicle and scapula are present.
Elbow
It is a hinge joint between the humerus and ulna.
Hands
The hands are an important part of the body because it acts evolutionary to all environmental stimuli. Both the hands are controlled by the left or right brain hemisphere so it depends on it for preferred hand choice for single-handed activities like writing, eating, etc. This reflects the trait of a particular individual and thus can vary from person to person.